MHT CET 2024 Physics question
When the same monochromatic ray of light travels through glass slab and through water, the number of waves in glass slab of thickness 5 cm is same as in water column of height 6 cm. if refractive index of glass is 1.56, then refractive index of water is
Answer: (C)
Solution
The number of waves in a medium of thickness is , where is the wavelength in the medium. So and, for the same monochromatic light (same ), equal numbers of waves means equal optical paths: t_g$ = μ_w
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